Azara on spiders, 39
on rain in La Plata, 49
on habits of carrion-hawks, 58
on range of carrion-hawks, 60
on a thunder-storm, 65
on ostrich-eggs, 95
on bows and arrows, 110
on new plants springing up, 125
on great droughts, 142
on hydrophobia, 378

Ehrenberg, Prof., on Atlantic dust, 5
on infusoria in Pampas, 87, 137
in the open sea, 172
in Patagonia, 180
in Fuegian paint, 234
in coral mud, 494
in tuff at Ascension, 525
on phosphorescence of the sea, 172
on noises from a hill, 385

Lyell, Mr., on terraces of Coquimbo, 367
on longevity of Mollusca, 87
on change in vegetation, 126
on fossil horses’ teeth, 137
on flocks of butterflies, 168
on extinct mammals and ice-period, 184
on stones twisted by earthquakes, 329
on frozen snow, 347
on distribution of animals, 349
on subsidence in the Pacific, 498

Subsidence of coral-reefs, 495 to 512
of Patagonia, 180
of Cordillera, 343, 355
of Coasts of Chile, 354
cause of distinctness in Tertiary epochs, 367
of coast of Peru, 379
of Keeling Island, 496, 504
of Vanikoro, 504
of coral-reefs great in amount, 509